From adbf7ce2c2b03ce5ee25d4c68f9bb247b0dcbc2b Mon Sep 17 00:00:00 2001
From: Maxim Cournoyer <maxim.cournoyer@gmail.com>
Date: Thu, 30 May 2024 14:48:04 -0400
Subject: [PATCH] bootstrap: Use gnulib-tool from PATH if available.

Some distributions such as GNU Guix include in their package for
gnulib a 'gnulib-tool' command under their $bindir
prefix (e.g. '/bin') for users to use, along the unmodified full
sources.  The idea is that any wrapping or distribution modifications
for the *execution* of the script at run time is done on these
commands, while the rest of the source should be in their
pristine (unmodified) version.  Adjust the 'gnulib-tool' discovery
mechanism to support such installation layout.

* build-aux/bootstrap (autogen) <gnulib_tool>: Prefer to use from
PATH, else from $GNULIB_SRCDIR/../../bin/gnulib-tool, else from
$GNULIB_SRCDIR/gnulib-tool.
* gnulib-tool.sh (func_gnulib_dir): Honor GNULIB_SRCDIR to locate
gnulib's main directory.
---
 build-aux/bootstrap | 11 +++++++++--
 gnulib-tool.sh      |  6 +++++-
 2 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/build-aux/bootstrap b/build-aux/bootstrap
index 6295b8a128..06271eea8b 100755
--- a/build-aux/bootstrap
+++ b/build-aux/bootstrap
@@ -3,7 +3,7 @@
 
 # Bootstrap this package from checked-out sources.
 
-scriptversion=2024-04-13.15; # UTC
+scriptversion=2024-05-30.20; # UTC
 
 # Copyright (C) 2003-2024 Free Software Foundation, Inc.
 #
@@ -1164,7 +1164,14 @@ autogen()
   fi
 
   if $use_gnulib; then
-    gnulib_tool=$GNULIB_SRCDIR/gnulib-tool
+    gnulib_tool=$(command -v gnulib-tool)
+    if test -x "$gnulib_tool"; then
+      :                         # done
+    elif test -x $GNULIB_SRCDIR/../../bin/gnulib-tool; then
+      gnulib_tool=$GNULIB_SRCDIR/../../bin/gnulib-tool
+    else
+      gnulib_tool=$GNULIB_SRCDIR/gnulib-tool
+    fi
     <$gnulib_tool || return
   fi
 
diff --git a/gnulib-tool.sh b/gnulib-tool.sh
index 12f0b82461..0aefbe2b2b 100755
--- a/gnulib-tool.sh
+++ b/gnulib-tool.sh
@@ -518,7 +518,11 @@ func_gnulib_dir ()
       * ) self_abspathname=`echo "$self_abspathname" | sed -e 's,/[^/]*$,,'`/"$linkval" ;;
     esac
   done
-  gnulib_dir=`echo "$self_abspathname" | sed -e 's,/[^/]*$,,'`
+  if test -n "$GNULIB_SRCDIR"; then
+    gnulib_dir=$GNULIB_SRCDIR
+  else
+    gnulib_dir=`echo "$self_abspathname" | sed -e 's,/[^/]*$,,'`
+  fi
 }
 
 # func_tmpdir

base-commit: ac4b301ae15223c98b51cd5a0eda2e2cf57c817b
-- 
2.41.0

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